Uso do Campo Elétrico na Geração de Alarmes para Risco de Descargas Atmosféricas

  • Bruno A. S. Oliveira Fundação para Inovações Tecnológicas - FITec
  • Marcos A. Alves Fundação para Inovações Tecnológicas - FITec
  • Willian Maia Vale SA
  • Fernando P. Silvestrow Fundação para Inovações Tecnológicas - FITec
  • Waterson S. Soares Vale SA
  • Luiz F. M. Rodrigues Fundação para Inovações Tecnológicas - FITec
  • Ana Paula Paes dos Santos Instituto Tecnológico Vale - ITV
  • Eugenio L. Daher Fundação para Inovações Tecnológicas - FITec
  • Douglas B. S. Ferreira Instituto Tecnológico Vale - ITV
  • Osmar P. Júnior Grupo de Eletricidade Atmosférica (ELAT) do Instituto Nacional de Pesquisas Espaciais (INPE)
Keywords: Electric field, Atmosferic discharges, Alert system, Protection, Lightning, Safety, Sensor


Statistics show that Brazil is the country with the highest incidence of atmospheric discharges in the world. Only in 2020 and 2021, there were 280 million lightning strikes in the country. On average, there are 110 deaths and 300 injuries per year, according to INPE, based on the period between 2000 and 2019, when there were 2,194 deaths due to the occurrence of atmospheric discharges. Private sector investments have been made in an attempt to predict this phenomenon to minimize the impacts caused. One of the ways to monitor lightning is through electric field sensors. In this way, the objective of this work was to carry out a qualitative and quantitative analysis of the relationship between electric field data and atmospheric discharges for an area in the central region of the state of Minas Gerais. As a result, it was found that a system for generating alarms using only the electric field sensor should be used with caution since numerous cases of discharges were seen in which there was no variation in the electric field at the same time. On the other hand, the electric field can help in the decision-making of the system, if used in conjunction with lightning data.